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US Patent: 3,286,127
Electric Discharge Machining Apparatus with Current Control Means
Patentee: Robert L. Henry (exact or similar names) - Cincinnati, Hamilton County, OH USPTO Classifications: 219/113, 219/69.13, 315/173, 315/209R, 315/227A, 327/405, 327/478, 327/535 Tool Categories: metalworking machines : electrical discharge machining Assignees: Cincinnati Milling Machine Co. - Cincinnati, Hamilton County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: May 18, 1961 Granted: Nov. 15, 1966 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Cincinnati Milling Machine Co.

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